Question

Fill the gaps in these sentences with after,back,in,out or up. (a).As it was so difficult he gave _______ trying .​

Answer 1

Up makes the most sense bc of how the sentence is set up

Answer 2

Up ; As it was so difficult he gave up trying

Step-by-step explanation:

The best way to find an answer to these questions is to sound the sentences out with the selected word. It'll become more clear which word belongs when you actually say it out loud.